Wheel-tire.



T. MIDGLVEY. VWHEEL TIRE.

APPLICATION FILED MAY 1, 1907.

Patented June 28,1910.

UNTTED STATES PATENT OFFICE.

THOMAS MIDGIJEY,

F CLUMBUS, HIO, ASSIGNGR TO THE HARTFORD RUBBER WORKS COMPANY, A vCORPORATTON 0F GONNECTICUT.

- WHEEL-TIRE.

ecarte.

i Specification of Letters Patent. Patented J 11110 28, 1910.

Application filed May 1, 1907. -Serial No. 371,304.

canized india *rubber compound.

The principal object of the invention is the provision of a tire comprising a resilient body, whichmay be of the solid, cushion, or pneumatic type, and provided with securing devices of simple and inexpensive design by means of which the tire may be readily and effectively secured upon a wheel rim presentingl a channel with fixed sides.

fiOther objects of the invention will appear in the course of the following description, 'inwhich reference is had to the accompanying drawings, corresponding parts in the several views being indicated by similar characters of reference.

In the drawings: Figure l is a plan view of a section of tire and rim, the structures embedded in the base of the tire being indicated in dotted lines; Fig. 2 is a perspective sectional view of a portion of the ltire and rim, some of the resilient material being removed from the base of the tire `to disclose the embedded stiffening structure; Fig. 3 is a fragmentary view in side elevation of the wheel rim and tire.

For simplicity of illustration, the tire shown is of the solid type and comprises a.

body of rubber compound 1 which is seated in a rim 2 comprising a at base portion 3 and side portions l, which areipreferably inclinedlaterally to a slight extent, as shown. :tn the base of the tire is embedded a structure consisting of a plurality of coils 5 of metal wire, which `are preferably interlaced to facilitate handling. As shown in the drawings, the axes of the coils are disposed circumferentially of the wheel and the .coils adjacent to the side portions of the tire base are distorted from their normal form by pressure, so that t-he upper portion of each whirl of these coils presents a concave curvature instead of the normal convex curvature.

The tire is scoured in the channel presentedl b v the rim by means of side vwires (l which rest in seats formed to4 receive them in the .be accomplished in various ways.

sides of the tire, cach wire lying over the concavity presented by the whirls of thead` jacent coil of wire embedded in the basel'of the tire. The side wires (l nia-y be-secured in any suitable manner, but they are preferably provided with turn-buckles 7 in ythreaded engagement with the ends of the wires, the threads on the wires and in the turnbuckles being oppositely disposed, so tha-t rotation ofthe turn-buckles .in one direction will contract the side wires upon the tire base and rotation in the lopposite direction will expand the side wires so as to permit them to slip readily over the side portionslof the rim. The side portions of the rim are preferably cut away, asshown/at 8, to facilitate the operation of the turn-buckles vby means of a short lever having an end adapted toenter the apertures 9 in the turn buckle.r

The-application of the tire to the rim may If the tire is formed endless, or is cut from a suitable length of stock and the Vends -joined before l application to the wheel, the 'tire should be of such circumferential length that it must be sprung over the rim. This may be easily done, as the embedded coils of wire in the base of the tire do not impair its circumferential extensibility. The tire having been sprung into the channel of the rim, the side Wires are seated upon the base ofthe tire in the seats provided to receive them and are then contracted by means of the turn-buckles until they bind tightly upon their seats. The removal of the .tire from the rim is accomplished by reversing the operations above described. The side Wires having been expanded by means of the turn-buckles, the tire can vbe pried .out of the rim channel without great diiiiculty by means of suitable tools.

From the foregoing description and the drawings referred to therein, it will be seen that the .tire is characterized by a -base `which 4is circumferentially extensible but is adaptried on the road, it is to beunderstood that.

the side Wires may be applied in the factory when the tire is tted to the wheel rim and may be secured by brazingthe ends 'or by other permanent fastenings. Turn-buckles or their equivalents are preferable, however, as their use permits the renewal of tires upon wheels Without shipping the wheels to the factory.,

Having thus described my invention, what Iclaim as new' and desire in secure by Letters Patent is:

The combination with a wheelv rim of a tire `comprising a. resilient vbody presenting lateral seats for binding wires and having embedded in its base and extending unbrokenly substantiall 1 from side to side thereof a plurality o metal wire coils, the coils adjacent to the sides of the base being eonczived to present seats for said bin,.ing wires, and metal bi .ding wires adapted to engage the seats on said tire body to secure the tire to the rim. i

In testimony whereof, I have signed my namey in the presence of two witnesses.

THOMAS MIDGLE Y.

Witnesses BAXTER MORTON, WM.. BRADFORD. 

